3 primes vs 35L

I was hoping to save up enough money to buy the 35L. However, it seems as though that might take a lot of time.

So instead I thought of buying three lenses for the price of one.
1.) Canon 85mm 1.8
2.) Rokinon 35mm 1.4
3.) Canon 50mm 1.4

I own a 5d mk ii, canon 50mm 1.8, sigma 24-60 dg and a canon rebel xt. I figured that as I upgrade I can sell the other lenses for maybe $300.

Does this seem like a good plan? It would be nice to have autofocus on the wide end-especially indoors(small home), but I think I would rather have image quality at an affordable price.

Ideas/thoughts?
Thanks,
Ben